Vacation and Fasting

Hello again! I wanted to give some of the information we have learned in zoology. It is flying creatures.
                                                                 Birds
-Feathers make a bird a bird.
-People need birds to control insect population.
                                                           Parts of a bird
Crown
Forehead
Upper mandible
Lower mandible
Chin
Throat
Breast
Belly
Flank
Tarsus
Tail
Rump
Wing
Back
Nape
-A bird calls to get attention,tell things,when and where to gather, and to alert danger.
                                                         Parts of a feather
Shaft
Quill
Vane
Barbs
Barbules
-Preening is when a bird oils and cleans it's feathers,rehooking the barbules.
-Contour feathers are feathers that give birds their shape and and form.Many contour feathers are used for flight.
Bird bones are light and hollow.
-The homing instinct is the ability for a bird to reach it's destination without getting lost.
-Birds migrate by using landmarks,the sun,stars,and magnetic fields.
                                                Types of nests
1.Cup nest
2.Bower
3.Woven nest
4.Scrape nest
5.Ground nest
6.Mound nest
7.Burrow nest
 8.Cavity nest
9.Platform nest
10.Adherent nest
                                                                      Parts of an egg
Cuticle
Inner shell membrane
Outer shell membrane
Egg white
Chalazea
Yolk
Germanal disk